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I've checked /etc/sudoers, /etc/nagios/nrpe.cfg, /etc/xinetd.d/nrpe,
and the script itself (/usr/local/nagios/libexec/check_logs.pl) and
none have any "tty" strings in them for me to comment out.<br>
<pre class="moz-signature" cols="72">
A. Davis
Email: <a class="moz-txt-link-abbreviated" href="mailto:nccomp@gmail.com">nccomp@gmail.com</a>
"There is no limit to what a man can accomplish
if he doesn't care who gets the credit." - Ronald Reagan
</pre>
<br>
<br>
Lei Chen wrote:
<blockquote
cite="mid:ef2bcbe00904020052k65af24fege25c692fd2def7b5@mail.gmail.com"
type="cite">
<pre wrap="">use visudo command, comment the following line:
Defaults requiretty
and try again.
2009/4/2 Andrew Davis <a class="moz-txt-link-rfc2396E" href="mailto:nccomp@gmail.com"><nccomp@gmail.com></a>:
</pre>
<blockquote type="cite">
<pre wrap="">Its running under xinetd, so 'ps aux|grep nrpe' isn't showing the true user.
However, the nrpe.cfg is set to use the nobody user. I've added the nobody
user to sudo, and even tried it as the nagios user. What I see now from the
server is:
/usr/local/nagios/libexec/check_nrpe -H atum -c check_logs
CHECK_NRPE: Socket timeout after 10 seconds.
And in the messages file on the client:
Apr 1 22:54:25 atum nrpe[25661]: Running command: /usr/bin/sudo
/usr/local/nagios/libexec/check_logs.pl -c /etc/nagios/check_logs_linux.cfg
Apr 1 22:54:25 atum /usr/bin/sudo: nobody : TTY=unknown ; PWD=/ ;
USER=root ; COMMAND=/usr/local/nagios/libexec/check_logs.pl -c
/etc/nagios/check_logs_linux.cfg
A. Davis
Email: <a class="moz-txt-link-abbreviated" href="mailto:nccomp@gmail.com">nccomp@gmail.com</a>
"There is no limit to what a man can accomplish
if he doesn't care who gets the credit." - Ronald Reagan
John Stile wrote:
On the client, if you look at 'ps aux |grep nrpe'
what user does nrpe run as?
You might have to configure sudo to allow that user to run the plugin.
On Wed, 2009-04-01 at 18:27 -0400, Andrew Davis wrote:
I setup the
"check_logs.pl"
(<a class="moz-txt-link-freetext" href="http://www.nagiosexchange.org/cgi-bin/page.cgi?g=Detailed%2F1752.html;d=1">http://www.nagiosexchange.org/cgi-bin/page.cgi?g=Detailed%2F1752.html;d=1</a>)
test and its config file on some local Linux servers tested via NRPE. All
other NRPE tests work fine (including some custom ones). The check_logs.pl
works fine locally, but fails over NRPE. I've enabled debugging in NRPE, but
its not telling me much more...
Client local test:
atum:/etc/init.d # /usr/local/nagios/libexec/check_logs.pl
-c /etc/nagios/check_logs_linux.cfg
faillog => OK; lastlog => OK; messages => OK; wtmp => OK;
Server test to client via NRPE:
/usr/local/nagios/libexec/check_nrpe -H atum -c check_logs
CHECK_NRPE: No output returned from daemon.
Local log (/var/log/messages) on client when test is run from server:
Apr 1 18:05:52 atum nrpe[1412]: Added
command[check_logs]=/usr/local/nagios/libexec/check_logs.pl
-c /etc/nagios/check_logs_linux.cfg
Apr 1 18:05:52 atum nrpe[1412]: INFO: SSL/TLS initialized.
All network traffic will be encrypted.
Apr 1 18:05:52 atum nrpe[1412]: Handling the connection...
Apr 1 18:05:52 atum nrpe[1412]: Host is asking for command
'check_logs' to be run...
Apr 1 18:05:52 atum nrpe[1412]: Running
command: /usr/local/nagios/libexec/check_logs.pl
-c /etc/nagios/check_logs_linux.cfg
Apr 1 18:05:52 atum nrpe[1412]: Command completed with return
code 0 and output:
Apr 1 18:05:52 atum nrpe[1412]: Return Code: 0, Output:
The response is immediate, so its not a timeout issue. Other NRPE
tests work fine:
/usr/local/nagios/libexec/check_nrpe -H atum -c check_load
OK - load average: 0.00, 0.00, 0.00|
load1=0.000;5.000;10.000;0; load5=0.000;5.000;10.000;0;
load15=0.000;5.000;10.000;0;
/usr/local/nagios/libexec/check_nrpe -H atum -c check_memory
CHECK_MEMORY OK - 1702M free |
free=1785552896b;210236620.8:;105118310.4:
And on the client:
Apr 1 18:09:25 atum nrpe[1799]: INFO: SSL/TLS initialized.
All network traffic will be encrypted.
Apr 1 18:09:25 atum nrpe[1799]: Handling the connection...
Apr 1 18:09:25 atum nrpe[1799]: Host is asking for command
'check_load' to be run...
Apr 1 18:09:25 atum nrpe[1799]: Running
command: /usr/local/nagios/libexec/check_load -r -w 5.0 -c
10.0
Apr 1 18:09:25 atum nrpe[1799]: Command completed with return
code 0 and output: OK - load average: 0.00, 0.00, 0.00|
load1=0.000;5.000;10.000;0; load5=0.000;5.000;10.000;0;
load15=0.000;5.000;10.000;0;
Apr 1 18:09:25 atum nrpe[1799]: Return Code: 0, Output: OK -
load average: 0.00, 0.00, 0.00|load1=0.000;5.000;10.000;0;
load5=0.000;5.000;10.000;0; load15=0.000;5.000;10.000;0;
Apr 1 18:09:26 atum nrpe[1802]: INFO: SSL/TLS initialized.
All network traffic will be encrypted.
Apr 1 18:09:26 atum nrpe[1802]: Handling the connection...
Apr 1 18:09:26 atum nrpe[1802]: Host is asking for command
'check_memory' to be run...
Apr 1 18:09:26 atum nrpe[1802]: Running
command: /usr/local/nagios/libexec/check_memory.pl -w 10% -c
5%
Apr 1 18:09:26 atum nrpe[1802]: Command completed with return
code 0 and output: CHECK_MEMORY OK - 1703M free |
free=1786134528b;210236620.8:;105118310.4:
Apr 1 18:09:26 atum nrpe[1802]: Return Code: 0, Output:
CHECK_MEMORY OK - 1703M free |
free=1786134528b;210236620.8:;105118310.4:
Here's the local command in my /etc/nagios/nrpe.cfg:
command[check_logs]=/usr/local/nagios/libexec/check_logs.pl
-c /etc/nagios/check_logs_linux.cfg
And on the server (when done in services.cfg, though its failing with
manual tests too):
define service {
hostgroup_name linux-servers
service_description LOGS
check_command check_nrpe!check_logs
max_check_attempts 3
normal_check_interval 15
retry_check_interval 5
check_period 24x7
notification_interval 120
notification_period 24x7
notification_options w, u, c, r, f, s
contact_groups unixadmins
}
Considering it fails with a manual test (command line), I doubt its my
services.cfg entry. It runs fine when called locally, so I'm thinking
it could be an issue on the client in the nrpe.cfg, but if so I can't
find it...
I *do* see the obvious... namely, the other two tests that run over
NRPE have something after "Output:" and the check_logs.pl does not.
However, called at the command line it does... which is what stumps
me.
What would cause the test to run fine locally, but return nothing when
called via NRPE??? (BTW: I'm running 3.x with the latest set of
plugins and NRPE).
One more thing: I know *someone* is going to ask why I don't just use
the built-in check_log test. The answer is that check_logs.pl allows
for multiple files and pattern matches and a "seek" file to speed
things up.
--
A. Davis
Email: <a class="moz-txt-link-abbreviated" href="mailto:nccomp@gmail.com">nccomp@gmail.com</a>
"There is no limit to what a man can accomplish
if he doesn't care who gets the credit." - Ronald Reagan
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</pre>
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<pre wrap=""><!---->
</pre>
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